Centrifugal thrashing and separating device



A ril m 1938.,

2 Sheets-Sheet l ATTORNEYS April 26, 1938. w. J. LEACH CENTRIFUGALTHRASHING AND SEPARATING DEVICE Filed Sept. 22, 1936 2 Sheets-Sheet 2 By0666' j w;

ATTORNEYS WITNESS Patented Apr. 26, 1938 PATENT OFFICE CENTRIFUGALTHR-ASHING AND SEPARAT ING DEVICE William J. Leach, Burlington, Wis.Application September 22, 1936, Serial No. 102,002

1 Claim.

The invention relates to a combined thrasher and separator and isadaptable for use in thrashing of all kinds of grain to eliminate thechaff, straw and dirt from the grain kernels.

5 The primary object of the inventionis the provision of a device ofthis character, wherein tlle material is fed centrally through astationary disk coacting with a rotating disk which is of .novelconstruction so that the grain kernels can be 10 separated from thestraw and chaff and a thorough thrashing obtained with the kernelsdelivered from the device and the straw delivered separated from thekernels.

Another object of the invention is the provision 15 of a device of thischaracter, wherein through centrifugal action the sheaf of grain and thekernels will be separated and such grain equally distributed or spreadin all directions while the cen trifugal force developed within thedevice delivers 2 the grain through an annular space between thestationary and revolving disks, these having teeth thereon so that thegrain under thrashing will be knocked from the straw and the graindelivered at one point and the straw at another, the device being novelin its entirety.

A further object of the invention is the provision of a device of thischaracter, wherein there is but a single moving part and in the workingthereof the thrashing and separating of the grain 30 and straw ismaterially simplified requiring minimum power for the working of suchdevice and also enabling the lightening of the weight of such device.

A still further object of the invention is the 35 provision of a deviceof this character, which is simple in its construction, thoroughlyreliable and eifective in its operation, durable, enabling the thrashingand separating of grain and straw, chaff or other foreign matter withdispatch, and

inexpensive to manufacture.

With these and other objects in view, the invention consists in thefeatures of construction, combination and arrangement of parts as willbe hereinafter more fully described, illustrated in the 45 accompanyingdrawings, which disclose the preferred embodiment of the invention andpointed out in the claim hereunto appended.

In the accompanying drawings:

Figure 1 is a vertical longitudinal sectional view 50 through the deviceconstructed in accordance with the invention.

Figure 2 is a sectional view on the line 2-2 of Figure 1 looking in thedirection of the arrows.

Figure 3 is a fragmentary plan view of the ro- 55 tary disk of thedevice.

Figure 4 is a view similar to Figure 3 of the stationary disk of suchdevice.

Similar reference characters indicate corresponding parts throughout theseveral views in the drawings. 5

Referringtothe drawings in detail, a standard A ofany suitable designcarries conventional bearings It for apower shaft 1 I, this fitted atone end with a belt pulley l2 for the driving from any suitablesour'ceof motive power while the other end of said shaft H has fittedsecurely thereon the hub l3 of a cupped rotary disk M. The cup wall l5of this disk I4 has fitted therewith radially disposed fan blades l6constituting a fan.

The disk [4 is within a housing or casing I1 and likewise the blades [6rotate within a fan casing extension I8 on the housing l1 while at theperiphery of this casing l8 and extended perpendicular at a tangent tothe said casing I8 is a straw discharge stack I9 for the dispersing ofstraw, chaff, dirt or other foreign matter from the device. Dependingfrom the housing l1 and formed therewith is a grain kernel deliveryhopper 20, it having the discharge spout 2| for the delivery of grainkernels from the housing and the deposit thereof at the requiredlocality.

Confronting the disk [4 and inwardly located within the cup wall I5 ofsaid disk is a stationary disk 22, it having a hollow cone center 23with an externally threaded neck 24 adjustably screwed within acollar-like mounting 25 having a bracket extension 26. This bracketextension is bolted or otherwise fastened upon a stand 21 and suchmounting 25 is carried centrally through the casing l8. By adjustment ofthe stationary disk 22, it can be moved toward or away from the rotarydisk M.

The stand 21 supports a feed trough or table 28 which opens into theneck 24 of the cone 23 of said stationary disk 22 and such trough ortable feeds the sheaf of grain into the device. The cone 23 of thestationary disk 22 constitutes a hopper for spreading the grain equallyin all directions when centrifugal force is developed through therotation of the disk M.

The disks M and 22 have on their confronting faces spaced annular rowsof teeth 29 and under action thereof thrashing is accomplished for theknocking of the kernels of grain off of the straw when the device isoperated.

The cup wall l5 of the disk l4 has formed therein an annular series ofdiagonally placed slots 30 which function to take the grain out of thestraw and impel the straw across the face of said wall I5 of the disk I4to the blades I 6 of the fan where the straw will enter the stack I9 fordischarge from the device. This disk I 4 with the wall I5 constitutes adrum and the slots in said wall I5 facilitate the separation of thegrain from the straw and impel the straw forward into the fan after ithas been separated from the grain.

The stationary disk 22 under adjustment thereof with respect to the diskI4 varies the gap between these disks for the thrashing of difierentkinds of grain, the stationary disk 22 being locked in the mounting 25in any suitable manner on adjustment of the same.

In the operation of the device the sheaf of grain is placed on thetrough or table 28 and is fed to the machine through the opening in theneck 24 into the hopper created by the cone 23 of the stationary disk22. This hopper spreads the grain equally in all directions and thecentrifugal force developed by the rotation of the disk I 4 feeds thegrain through the space between the disk I4 and the disk 22 while theteeth 29 knock the kernels of grain ofi the straw. The straw and graintogether pass from between the disks I 4 and 22 for entering the drumcreated by the wall I5 on the disk I 4 whence the straw will traversethis drum into the fan and the grain separated from the straw beingdelivered into the hopper 20 while the straw will enter the stack I9.

Concentrically of the rotary disk I4 and operating within the conecenter 23 of the disk 22 is an annular row of spaced spurs orprojections 3| which act upon the sheaf of grain fed into the cone 23during the working of the device.

What is claimed is:

A centrifugal thrashing and separating device comprising confrontingdisks, a cupping wall peripherally on one disk, radially disposed fanblades carried at the free edge of the cupping wall and extendingoutwardly relative thereto, a cone formed centrally of the other diskand having an externally threaded neck, a stationary collar-likemounting having the said neck adjustably threaded therein, means forintroducing material through the neck and cone to between the disks,means for imparting rotary movement to the disk having the cupping wall,a housing about said disks and fan blades, outlet conduits next to thefan blades and the disks, respectively, the said cupping wall having anannular series of diagonally disposed slots for taking grain out ofstraw across the face of said cupping wall and delivering the straw tothe blades for the discharge of the straw, and a plurality of rows ofspaced teeth projecting from confronting faces of the said disks.

WILLIAM J. LEACH.

